You've just created a new Windows Phone Application, but after running the project, it raises an error with no description:



This occurs when the Hyper-V Service isn't running. If you look at the Hyper-V Manager, all will be clear.



Thats right! The Virtual Machine Manager service isn't running.To start the service, go to "Computer Management" then select "Services" and then start the "Hyper-V Virtual Machine Management" Service.



After started, the application will run normally.